Rocktron Xpression issue

I gave an Xpression my rack with my Triaxis rig. When I power it up its fine. The display is bright and steady. Then within about 10 seconds the display dims slightly, and then starts kind of pulsating.

The sound isn't affected but it's annoying to read and work with.

Any ideas? Power issue? I have everything plugged into a Furman Power conditioner.